Ingredients
Cooking spray
1 Tbs Butter
3 1/2 cups chopped onion
4 ounces Gruyère cheese, shredded and divided
2 tablespoons chopped fresh chives, divided
1/3 cup canola mayonnaise
1/3 cup fat-free sour cream
1/4 teaspoon salt
1/4 teaspoon black pepper
4 bacon slices, cooked and crumbled
Preparation